84912057 has 20 divisors (see below), whose sum is σ = 129799120. Its totient is φ = 55289304.

The previous prime is 84912053. The next prime is 84912103. The reversal of 84912057 is 75021948.

It is not a de Polignac number, because 84912057 - 2² = 84912053 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84912053) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8707 + ... + 15672.

It is an arithmetic number, because the mean of its divisors is an integer number (6489956).

Almost surely, 2^84912057 is an apocalyptic number.

It is an amenable number.

84912057 is a deficient number, since it is larger than the sum of its proper divisors (44887063).

84912057 is a wasteful number, since it uses less digits than its factorization.

84912057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24434 (or 24425 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 84912057 is about 9214.7738442134. The cubic root of 84912057 is about 439.5312794427.

The spelling of 84912057 in words is "eighty-four million, nine hundred twelve thousand, fifty-seven".